G35.B1
Billable codeActive primary progressive multiple sclerosis
The ICD-10 code for active primary progressive multiple sclerosis is G35.B1.
Clinical notes
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Primary progressive multiple sclerosis with evidence of inflammatory disease activity
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- G35.B0Primary progressive multiple sclerosis, unspecified
- G35.B2Non-active primary progressive multiple sclerosis
- G35.B1Active primary progressive multiple sclerosis
Associated MS-DRGs
G35.B1 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.